30
CAP. 400]
Patents
he may amend the patent by substituting for the name of that person
the name of the person entitled thereto according to law, and the
patent shall have effect, and shall be deemed always to have had
effect, accordingly.
Date of patent
27. (1) Subject to the provisions of this Act, the date of a patent
shall be
(a) in the case of a patent granted under this Act, the effective
date of the application therefor;
(b) in the case of a patent granted under the Patents (Southern
Rhodesia) Act, Chapter 208 of the 1948 Edition of the
Laws, the date the patent was sealed;
(c) in the case of a patent registered under the Registration of
United Kingdom Patents Act, Chapter 205 of the 1957
Edition of the Laws, the date of the patent in the United
Kingdom;
(d) in the case of a patent granted under the *Patents (Transitional
Provisions) Act, 1958, the date specified in paragraph (b) or
(c), as the case may be.
(2) The date of a patent referred to in paragraph (a) or (d) of sub
section (1). shall be entered in the register.
(3) The date of a patent referred to in paragraph (a) or (d) of sub
section (1) shall be inserted in the patent.
(No. 12 of 1959 as amended by G.N. No. 185 of 1964
and S.l. No. 175 of 1965)
Extent, effect
and fonn of
patent
28. (1) Subject to the provisions of this Act, a patent shall have
the same effect against the State as it has against a subject.
(2) A patent shall be in such form as may be prescribed.
(3) A patent shall be granted for one invention only, but it shall
not be competent for any person in an action or other proceeding to
take any objection to a patent on the ground that it has been granted
for more than one invention.
(4) The effect of a patent shall be to grant to the patentee, subject
to the provisions of this Act and the conditions of the patent, full
power, sole privilege and authority by himself, his agents and
licensees during the term of the patent to make, use, exercise and
vend the invention within Zambia in such a manner as to him seems
meet, so that he shall have and enjoy the whole profit and advantage
accruing by reason of the invention during the term of the patent.
(As amended by G.N. No. 185 of 1964
and S.l. No. 175 of 1965)
*Repealed by Act No. 15 of 1965.